Water content and shear strength evaluation of marine soil after electro-osmosis experiments

Xiaowei TangState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning, China;Institute of Geotechnical Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning, China

Zhijia XueState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning, China;Institute of Geotechnical Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning, ChinaCorrespondence[email protected]

Qing YangState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning, China;Institute of Geotechnical Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning, China

Tao LiState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning, China;Institute of Geotechnical Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning, China

Michael VanSeverenCollege of Engineering, Northeastern University, Boston, Massachusetts, USA

ABSTRACT

In this study, a series of electro-osmosis experiments were conducted using Dalian marine soil to evaluate the water content and shear strength of soil samples after electro-osmosis experimental treatment. The conditions that were considered in these experiments include voltage, preloading pressure, drainage direction, temperature, anode material, and processing duration. In comparing water content and shear strength, the different operational conditions were demonstrated to affect the results of electro-osmosis to a variable extent. For example, the shear strength of samples at 35°C improved by an average of 61.96% compared with room temperature samples. Also, water content under 12 V trials decreased by an average of 9.30% compared with 6 V. These results can be attributed to the difference in electro-dewatering capacities of the conditions mentioned above. Based on the data, two statistical relationships, which represent the relationship between experimental conditions and results, were also established.

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Water content and shear strength evaluation of marine soil after electro-osmosis experiments

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